what is data independence exactly? give an example
Answer Posted / monika
Data independance:
It includes the isolation of data from application program.
There are 2 types of data independance:
1.Logical data independance:
The ability to change the conceptual schema without
altering the external schema or application programs.
2.Physical data independance:
It is ability to change the internal schema without
changing the conceptual or external schema.
| Is This Answer Correct ? | 4 Yes | 4 No |
Post New Answer View All Answers
What is a user account in oracle?
What do the 9i dbms_standard.sql_txt() and dbms_standard.sql_text() procedures do?
what is the use of system.effective.date variable in oracle?
How to start your 10g xe server from command line?
Where is the export dump file located?
What do you mean by merge in oracle and how can we merge two tables?
Why do we need oracle client?
What is a static data dictionary in oracle?
How to call a sub procedure?
Explain the characteristics of oracle dba?
How to convert characters to dates in oracle?
What is the dynamic sql in oracle?
how do we code triggers , store procedure , Performance tuning and indexing in a Java Project? Pls kindly get me the perfect answer with the code for each....thank you in advance............pls any body kindly help me soon as possible....
What is the usage of save points in oracle database?
What is max rowid in oracle?